Combination calculator



April 29, 1941. `R. P. Rass COMBINATION cALouLAToR l Filed April 27, y1940 4 Sheets-Shee1; l

"Lf-i5@ cima. undef' 18 www 1 umm Apr 29, 1941. R. P; Ross 2,240,2264

coMiNATIoN cALcLATon Filed April 27, 1940 4 sheets-smet 2 April 29, 1941. R. P. Ross GOMBINATIONv cALouLATn Fi-1fed April 27, 1940 April 29, 1941;.

R F.- Ross COMBINATION ALCULATOR 4 sheets-Smm 4 Filed April 27. 1949 Patented pr. 29, 1941 UNITED STATES PATENT OFFICE t 2,240,226 COMBNATION CALCULATOR Ralph P. Ross, Dallas, Tex.

Application April 27, 1940, Serial No. 332,082

13 Claims.

This invention relates to a combination calculating device for use of insurance and annuity companies, more particularly by the agents or salesmen of such companies, but it is to be understood that a calculating device, in accordance with this invention is for employment in any connection for which it may be found applicable.

The invention aims to provide, in a manner as hereinafter referred to, a device for calculating premiums, rates, benets and annuities having as elements thereof a pair of independently operable slidable members carrying normally concealed data selectably visible from either` side thereof and with-the operation of one member not interfering with the movement or visibility of the data on the other member.

The invention further aims to provide, in a manner as hereinafter set forth, a device of the class referred to including a housing formed of a pair of parallel compartments each for one of the slida'ble members aforesaid and each having its front wall formed with a pair of windows for the selective exposure of data carried by said members, and with the body of the housing including oppositely disposed anchored parts for respectively strengthening the housing and for maintaining it flat; acting as positive stops for limiting the inward movement of said members to thereby prevent one member from obstructing the windows which `are correlated with the other one of said members; for independently retaining said members from movement when not operated; and to permit of holding the one end of the device naturally in one hand while operating a member with the other hand without retarding or stopping its movement by pinching action on the housing when holding the latter.

The invention further aims to provide, in a manner as hereinafter set forth, a device of the class referred to which is simple in its construction, strong, durable, compact, conveniently held and operated when desired, capable of being stored in the pocket of a garment, thoroughly efficient in the use intended thereof, the same being adapted for expeditiously calculating, readily assembling and being inexpensive to manufacture.

Embodying the aims aforesaid and others which may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts as will be more speciiically referred to and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawings:

Figure 1 is an elevation, broken away, looking towards one side of the device,

Figure 2 is an elevation, broken away, looking towards the other side of the device,

Figure 3 is an elevation looking towards the front face of the blank from which the housing is formed,

Figure 4 is a section on line 4-4 Figure 1 upon an enlarged scale,

Figure 5 is a section on line 5-5 Figure 1 upon an enlarged scale,

Figure 6 is a section on line 6-6 Figure 1 upon an enlarged scale,

Figure 7 is a fragmentary View in rear elevation illustrating the manner in which one of the indicia carrying members is latched or locked,

Figure 8 is a section on line 8-8 Figure 1 upon an enlarged scale,

Figure 9 is an elevation looking towards one side of a modified form of combination calculator in accordance with this invention,

Figure 10 is an elevation looking towards the other side of the device shown by Figure 9,

Figure 11 is a section on line II-Il Figure 9 upon an enlarged scale,

Figure 12 is an elevation of the foldable outer section of the device shown by Figures 9 and 10 looking towards the one face of such section with the latter extended.,

Figure 13 is an elevation of the foldable inner section of the device shown by Figures 9 and 10 looking towards one face of such section with the latter extended,

Figure 14 is a lengthwise section, upon an enlarged scale, of the inner section of the device shown by Figures 9 and 10 when such section is partly folded,

Figures 15 and 16 are respectively sections on lines iii-I5, lli- I8 Figure 10 upon an enlarged scale,

Figure 17 is an elevation looking towards one side of still another modied form of combination calculator in accordance with this invention,

Figure 18 is an elevation looking towards the other side of the device shown by Figure 17,

Figure 19 is a section 0n lines |9-l9 Figure 18 upon an enlarged scale,

Figure 20 is an elevation of the foldable outer section of the device shown by Figures 18 and 19 looking towards one face of said section when the latter is extended,

Figure 2l is an elevation the cldabie inner section of the device shown by Figures l? and lil looking towards one face of id section when the latter is extended, and

Figure 22 is a section en line Ei-2 Figure 13 upon an enlarged scale.

The device includes a housing or envelope i formed of a pair of independent oppositely dis posed parallel compartn'ients or pockets II, l closed at their inner enos. The housing i3 preferably will be constructed from a rectangular folded web I3 of cardboard stoff: oi desired tl ness, but it is to be understood that housing lili may be set up of any other suitable materia The compartment II includes a front Wa formed of outer and inner sections lil, l spectively. The compartment Ill includes a wall I6. wall II which is common to and provides the i: ner wall of the compartments I i, l Z2 'I'he web i3 includes a fold A t provides the section I4 oi the wall I3a o1" the compartment II, a fold B providing the front Wall I3 o1" cor fpartment I2, a fold C forming the section of the front wall I3l of compartment lI, and a fold D which forms the internal Wall il' ci the housing I0. The web I3 is provided with the bends or scores E, F, G. he bend E is arranged between the folds A, E, the band l between the folds B, C and the bend G- betwecn the folds C, D. The end edges Il', I oi the folds A, B, C are formed centrally With ental cutcuts J.

The fold A, in proximity to its end edge l is formed with a transversely ending elongated narrow oblong slot which provir os the front section I4 of wall L31L with a window The fold A, in proximity to its end edge l the bond is provided with a rectangular oi less width and greater length than the slot which forms the said section it Window I9. The fold in pro" nity to its end edge H is provided with a transversely exten oblong slot which forms the front Wall 'S of cempartment I2 with a window rihe fold B, in proximity to its end edge I is formed with a transversely extending elongated oblong slot which provides the said wall Iii with another window 2I. The length of the window El is greater than the length of the window 2d. The fold C is provided with a oi" slots corresponding in form and arrangement to the slots in the fold A to thereby provide the section iii of the wall I3n with a pair of windows 22, 23. The folds A, B and C are of the same length. The fold D is of less length than the other folds its erd edges K, L are of less length than the edges l of the said other folds. The end edges K, L do not align with and are inset with respect to the said end edges H, I. The fold D is formed oi an elongated rectangular inner portion M, and a pair of oppositely disposed cblonCr end port Q, R having straight inner edges spaced i the fold C. The width of the por .as R is less than the width of the portion M. The outer corners of the portions Q, R are rounded, at T. The fold D at the point of mergence of the portions N, O with the portions M is fo 1med with bends or scores U, V, respectively. The end portions Q, R are bent in opposite directions on the scores U, V to form the wall I 'I with a pair of oppositely disposed naps 2., 25 for a purpose to be referred to.

The web I3 is iolded in a to position `the inner face of fold A against the cuter ieee of fold C and when said folds A and C are so eea with another i:

arranged they are secured together by the cementitious material 23 disposed between the inner and outer faces oi the sections I4, I5 respectively of the front Wall I3a of compartment il. When the folds A, C are arranged in the manner aforesaid the windows I3, 22 are in registry and the windows I9, 23 are also in registry. Prior to the arranging of the folds A, C in a manner as aforesaid, the fold D is arranged st the inner face of the fold C and the lap Erl extended outwardly through the window 22, the fold B is then arranged against the inner face of the fold C and the iiap 25 extended outwardly irough the window 2 I. The folds A, C are then ositioned as aforesaid, but before securing them together, the ap 24 is extended outwardly through the Window I8.

ne flap 24 is secured by the cementitious 1naterial El thereon to that portion of the outer face of wall i3@ below and bordering the bottom wall of window I8. The flap 25 is secured by the cemcntitious material 28 thereon to that portion of is outer face oi wall I5 above and bordering ie top wall of window ZI.

The iiaps 2:1, 25 secure the walls I3a, I8 and I'l together and also act as a reinforcement for the i'iousihg.

The nap 24 forms a closed end wall for the parti t I, as at 23. The flap 25 provides a closed end wall for the compartment I2, as at The other end of the compartment lI is pen, as at 3l. The other end of the compartnent I2 is open, as at 32. The open end 3| oi compartment Il is at one end and the open d of the compartment l2 is at the othe1 yiid oi the housing.

When the flaps 24, 2E are secured to the walls IG, their inner portions adjacent the bends U, V are disposed at opposite inclinations, as at respectively and bear intermediate their s respectively against the lower walls of the Windows Il?, 22 and against the upper wall ol' window 2l. rEhe portions 33, 313 of the ilaps 24, 35 are disposed at an inclination with respect to 'the outer secured portions of said flaps. The said portions 33, 34 of the flaps correlate with the wall I'I to provide a latching means for a purpose to be referred to.

`The device includes a pair of oppositely disposed indicia carrying members 35, 36 positioned in the compartments II, I2 respectively. Each member is capable of being slidably adjusted relative to its associated compartment. Each member is in the form of a rectangular card having its front and rear faces provided with suitable indicia, as at 37, 38 respectively, for selective exposure. The indicia on one face of a card being diiierent from the indicia on the face of the card, the indicia on the faces oi one card being diilerent from the indicia on the laces ol' the other card. The cards are of less length than the length of the housing. The member 35 arranged in the compartment II is normally held stationary within said compartment by the retaining means provided by the correlation of one end of the wall II with the portion 33 of the nap t, to thereby prevent the member 35 from shitting relative to the housing when said member 35 is not operated. The member 33 arranged in the compartment I2 is normally held stationary within such compartment by the retaining means provided by the correlation of the other end of the wall I'I with the portion 34 of the flap 25 to thereby prevent the member 35 from shifting relative to the housing when said member 36 is not operated.

The outer face of the wall I3a and the outer face of the outer secured portion of the flap 24 are provided with suitable indicia 39 for correlation with the indicia on the front face of member 35 and on the rear face of member 36. The outer face of the wall I6 and the outer face of the outer secured portion of the flap 25 are provided with suitable indicia 40 for correlation with the indicia on the front face of member 36 and on the rear face of member 35.

The selected indicia on the front face of member 35 is exposable through the registry windows I9, 23 and the selected indicia on the rear face of mem-ber 35 is exposable through the window 2l. The selected indicia on the front face of member' 36 is exposable through the window 22 and the selected indicia on the rear face of meinber 36 is exposable through the registry windows The cutouts J at the ends of the folds A, B, C provide the ends of the walls I3a, I6 with means to facilitate the gripping of the members 35, 36 when said members are to be selectively operated.

On the shifting of the member 35 to an extent to expose selected indicia, the latter will be visible through the windows I9, 23 and 2l. On the shifting of the member 36 to an extent to expose selected indicia the latter will be visible through the window 26 and the windows I8, 22.

The modied construction of the device shown by Figures 9 to 16 is in the form of a housing or envelope 31 having a front 38, a back 39, a pair of closed sides 49, 4I, a pair of ends 42, 43, a pair of oppositely disposed compartments 44, 45, one of which opens at one end of the housing and the other at the other end of the housing, a cutout 41 centrally of each end of the housing, a pair of Windows 68, 49 in the front 38 and a pair of windows 56, I in the back 39. The Windows 48 and 49 associate with the compartment 44, the windows 56, 5I associate with the compartment The housing or envelope 31 is set up from an outer 'foldable section 52 and an inner foldable section 53. The section 52 is formed from a web 54 of paper of the desired rigidity, length and width. The section 53 is formed from a web 55 of paper of the desired rigidity, length and width.

It is to be understood that the Webs 54, 55 may be formed from any suitable material.

The web 54 includes a pair of substantially rectangular portions 56, 51 with the Windows disposed in staggered relation with respect to each other and separated by a score 58 disposed lengthwise of the web 54. The portion 56 has its terminal parts indicated at 59, 60. The portion 51 has its terminal parts indicated at 6I, 62. The parts 59, 6U are spaced from the portion 51. The parts 6i, 62 are spaced from the portion 56. The part 59 is of less length than the part 60. The part 6I is of greater length than the part 62. The parts 59, 62 are substantially of the same length. As shown, the part 60 is of less length than the part 6I, but notnecessarily as this depends upon the position of the windows.

The part 56 is formed with a pair of spaced parallel transverse scores 63, 64 inwardly adjacent the ends of said portion 56. The score 64 is disposed a greater distance from the nearest end of the portion 56 than the score 63 is spaced from the other end of said portion 56. The arrangement of the scores 63, 64 as stated provides for the end part 59 to be of less length than the end part 66. The end part 59 is foldable on the score 63 in a direction towards the inner face of the portion 56 and constitutes a flap indicated at 65 for a purpose to be referred to. The end part 60 is foldable on the score 64 in a direction towards the inner face of the portion 56 and it provides a flap, indicated at 66, for a purpose to be referred to. That part of the portion 56 between the scores 63, 64 is of greater width than the end parts 59, 60 and has its free edge 61 oppositely inclined from its center towards each end. The portion 56 is formed lengthwise thereof with a score 68, which aligns with a side edge of the flap 66. That part of the portion 56 arranged outwardly of the score 68 is indicated at 69 and is foldable on the score 68 to engage the inner face of the back 39. 'Ihe said part 69 has arranged on its outer face cementitious material 1D and such part 68 forms a securing flap indicated at 1I for a purpose to be hereinafter referred to. It will be noted, however, that when folded the calculator may be completely enclosed in a clear tight tting Celluloid outer jacket, in which event no cement will need to be used on the paper jacket. That part of the portion 56 arranged between the scores 63, 64, 68 and 58 provides the said front 38, and such part is formed with openings 12, 13 which constitute respectively, the windows 48, 49 in the front 38. The opening 12 is of rectangular contour, as well as the opening 13. As shown the latter is of greater length and less width than opening 12, but this will vary in different jobs. The end part 60 of the portion 56 is formed with an opening 14. The portion 56 centrally of the scores 63, 64 is formed with a pair of spaced aligned substantially elliptical-shaped openings 15, 16 for a purpose to be referred to. Preferably, the end part 59 will have oppositely inclined side edges and the end part 60 squared side edges.

The portion 51 is formed with a pair of transverse spaced parallel scores 11, 18, which extend from the score 58 to the free lengthwise edge of the said portion 51. The score 11 is disposed a greater distance from the nearest end of the portion 51 than the score 18 is disposed from the other end of said portion 51. That part of the portion 51, which is arranged between the scores 58, 11, 18 and the lengthwise free edge of the portion 51 corresponds in width to that part of the portion 56 between the scores 58, 68, 63, 64. That part 19 of the portion 51 between the scores 58, 11 and 18 provide the back 39 of the housing 31. The said part 19 is formed with a pair of spaced parallel elongated rectangular openings 88, 8| which provide respectively the windows 50, 5I in the back 39. The end part 6I is foldable inwardly on the score 11 and provides a ap indicated at 82 for a purpose to be referred to. The end part 62 is foldable inwardly in a direction towards the inner face of the portion 51 and constitutes a flap indicated at 83 for a purpose to be referred to. The portion 51 is formed with a pair of spaced parallel aligned openings 84 85 of elliptical contour centrally of the scores 11, 18 respectively for a purpose to be referred to.

The web 55 is of elongated rectangular contour and provided at each of its ends with a semiellip-tical cutout 86. The web 55 between its transverse median and each end is formed with a transverse score and these scores are indicated at 81, 88. Both scores are on the same face oi.' the web, but the folds are made in opposite directions. The scores are so spaced to form the web with an intermediate fold 89 and a pair of end folds 90, 9|. As shown, the folds 90, 9! correspond in length, but they are of greater length than the fold 99, this in turn depending upon the position oi the windows. These folds, however, may be different in length. Portion 9i] extends from the score 63 to the inner edge of' window 13 while the portion 9| extends from score 18 to the inner edge of window 85. Therefore, the portion 90 will be positioned between the inner edges of windows I3 and Si). The fold to is bent on the score 81 in a direction towards one face of the web 55 and the fold 9| is bent on the score .88 in a direction towards the other face of the web 55. When the web 55 which provides the section 53 is folded, it will appear as shown by Figure 14, whereby the folds 93, 9| will extend `in opposite directions beyond the ends of the fold 89. The fold 90 in proximity to its outer end edge 92 is formed with an opening 93 for a purpose to be referred to. As shown, the opcning 93 is spaced a greater distance from the lengthwise edge 93a of the web than it is spaced from the other lengthwise edge 94 of the web, but this may vary. The fold 9| in proximity to its free end edge 95 is formed with an opening .96 of greater width than the opening 93 and it is spaced an equal distance from the edges 93d, 94 of the web. The inner Wall or edge 91 oi the opening 93 is oppositely inclined and the rernaining edges of such opening' 93 are straight. The

inner edge 98 of the opening 99 is oppositely in within the section 52 the folds 89, 9i! coact to 1 form the outer and inner walls o1 the compartment 44 and the folds 9| and 89 coact to form the outer and inner walls of the compartment 5. The compartment 44 is closed at its inner end by the bend 99 between the `folds 99 and 9i). compartment 45 is closed at its inner end by the bend IUD between the folds 89, 9|. The conipartments 44,l 45 are of less length than the length of the housing 45. The bend 99 is positioned close to the inner edge of window T3. The bend |09 is positioned close to the inner edge of window 80.

The indicia carrying members of the device 3i are designated at |G| m2 and they correspond in `form to the members 35, 315. |02 are slidably mounted in the compartments 44, respectively.

The side 4|! is provided by a wide or double score which forms the bend between the flap 1! and the front 38. The side 4| is provided by the scored bend between the front 38 and baci: 39. The end 42 if formed by the scored bend between the flap 6B and the front 38 and the scored bend between the ap 83 and the back 39. The iiaps 66, .33 align when folded, but are not connected together to thereby provide for the compartment 44 to be open at its outer end allowing access for siidable member |0|. The end 43 is formed by the bend between the nap and the front 38 and the bend between the flap 82 and the back 39. The flaps 65, B2 align when folded, but are not connected together to thereby provide for the compartment 45 to be open at its outer end allowing access for slidable member |82. The fold 89 of section 53 is common to the cornpartments 44, 45 and form the inner wall thereof.

The sections 52 and 53 are correlated in a man ner to provide the calculator 3l as follows: The

`section 52 is extended and the ilaps 65, G6, 82., .83

The

The members thereof are inturned relative thereto, the fold 9|, of section 53, at its free end is then inserted be tween the flap 83 and the back 39 and the bend |90 .between folds 89, 9| is then positioned between the flap 82 and back 39. The back 39 is then folded towards the front 3B with the section 53 arranged between the said front and back, then the fold 90, of the section 53, at its free end is inserted between the flap and the front 38 and the bend 99 between the folds 89, 90 is inserted between the flap 6B and front 38, after which the flap 1| is secured to the inner face of back 39 and the device 3T, with the members lill, it2 therewith will appear as shown by Figures 9, l0, 11, 15 and 16.

When the device 31 is assembled the window 49 in the front 38 will align with the opening 93 in the fold 9B of the section 53 to thereby expose selected indicia on the back of the member |02, the window 48 in the front 38 will expose selected indicia on the front of the member |0|, the window 5| in the back 39 will expose selected indicia en the front of member |92 and the window 5|) in the back 39 will align with the opening 96 in the fold oi section 53 to thereby expose selected indicia on the back of member |5|. The outer faces of the front 38 and back 39 will be provided with indicia for correlating with the indicia on the faces, of the members IUI, |52.

With reference to Figures 17 to 22, the modii'led form. of combination calculating device shown thereby is generally indicated at |03 and comprises a housing or envelope |64 formed of a front |05, a back |05, a pair of ends |07, |98 and a pair of sides |09, H9. Each of the said ends is formed with an opening.

The housing |94 consists of an inner and an outer section i2 respectively. The section |l| is formed from a web ||3 of paper eardboard of the desired rigidity, length and width. The section ||2 is formed from a web ||4 of paper of the desired rigidity, width and length. It is to be understood, however, that the said `sections may be formed of any suitable material.

The web ||3 comprises a pair of folds ||5, ||6 disposed in staggered relation with respect to each other. The Aiold ||5 is substantially of rectangular contour. The fold ||6 is of rectangular contour. The fold ||5 is of less length than the lold H6, but the major portion of the length of fold ||5 is of greater width than the fold H6. The folds i i5, I6 are separated by and foldable towards their inner faces on a score H1 disposed lengthwise of web ||3. The fold ||5 at a point between its transverse median and one end is formed with a transverse score H8 extending from one end of the score to the free lengthwise edge thereof. That part of the fold ||5 disposed outwardly with respect to the score and one end of the fold ||5 forms a flap ||9 provided with an opening |29. The flap ||9 is of less width than the remaining portion of fold I5. The fold l5 inwardly of and in proximity to the score ||8 is formed with a transversely extending opening |2| which provides an upper window |2|il in the front |05. The fold I5 in proximity to its end edge |22 is formed with an opening |23 which provides a lower window |23a in the front |95. The fold ||5 is provided with a. lengthwise score |24 which extends from the outer end of the score ||8 to the said end edge |22 and it is disposed in proximity to the free lengthwise edge of the portion of greatest width of said fold. That part of fold ||5 disposed outwardly of the score |24 forms a flap |25 having its outer face provided with a cementitious coating |26. The end edge |22 of fold ||5 is formed centrally thereof with a notch |21. The fold centrally of the score ||8 is provided with an opening |28 of elliptical contour, for a purpose to be referred to. The opening |2| is of greater length and of less width than the opening |23. That portion of the fold ||5 between the scores |24 and between the score ||8 and the end edge |22 forms the front |05 of the housing |04.

The fold 6 is provided between its transverse median and one end with a score |29 extending from the other end of score ||1 to the free lengthwise edge thereof. That part of the fold ||6 disposed outwardly with respect to the score |29 and the end edge |22 of the fold ||5 forms a fiap |30 provided with an opening |3I. The flap |30 corresponds in width to, but it is of greater length than flap 9. The fold 6 inwardly of and in proximity to the score |29 is formed with a transversely extending opening |32 which provides a lower window |32a in the back |06. The fold ||6 in proximity to its end edge |33 is provided with a transversely extending opening |34 which forms an upper window |34a in the back |06. The end edge |33 of fold I I6 is formed centrally thereof with a notch |35. The fold I6 is provided with an elliptical shaped opening |36 disposed, centrally of the score |29.

The web ||4 is in the form of a parallelogram and of less width than the web I3. The web I4, in proximity to each end thereof, is formed with a transverse score. The scores are indicated at |31, |38, divide the web into an inner fold |39 and a pair of outer folds |40, |4| The scores are so arranged on the web to provide for the outer folds being folded in opposite directions relative to the fold |39, and with the latter being of greater length than the folds |40, |4I.

The fold |39 correlates with the inner face of the front |05 to form a compartment |42 which opens at the end |08 of the housing |04. When the fold |39 correlates with the front |05 to form the compartment |42 one face of fold |40 is secured by suitable adhesive material to the inner face of front |05 below and in proximity to the window |2|, and the bend between the folds |39, |40 forms the closed inner end of said compartment. The fold |39 correlates with the inner face of the back |06 to form a compartment |43 which opens at the end 01 of the housing |04. When the fold |39 correlates with the back |06 to form the compartment |43 one face of the fold |4| is secured by suitable cementitious material to the inner face of back |06 above and in proximity to window |328, and the bend between the folds |39, |4| forms the closed inner end of the compartment |43.

The indicia carrying members of the device |03 are designated |44, |45 and correspond in form to the members 35, 36. 'I'he members |44, |45 are slidably mounted in the compartments |42, |43, respectively.

When the sections ||2 are assembled, the web I4 is folded and positioned on the inner face of the fold ||6 of web ||3, after which the fold ||5 of web ||3 is folded on the folded web ||4. The folds |40, |4| of the web ||4 are secured respectively to the inner faces of the folds ||6, ||5 of web ||3. The iiaps |l9, |30 are then inturned to position the inner parts thereof against opposite faces of the fold |39 of web |4. When the iiap |30 is inturned, the opening |3| therein will align with window |23a in front |05 to provide for exposing selected indicia on the rear face or side of member |44. The window |34 in back 06 for exposing selected indicia on the front face or side of member |44. When ap ||9 is inturned, the opening |20 therein will align with the window |2|a in front |05 to provide for exposing selected indicia on the rear face or side of member |45. The window |34a in back |06 is for exposing selected indicia on the front Y face or side of member |45.

After the section l2 has been arranged within and secured to the section the flap |25 is positioned to overlap a portion of the inner face of the back |06. The flap |25 is secured to the inner face of back |06 by the cementitious material |26 whereby section ||4 is maintained closed.

The flap ||9, when inturned is not secured to fold |6 and it opposes in spaced relation the intween the flap |25 and the front |05. The housing side ||0 is formed by the bend between the front |05 and back |06. The housing end |01 is formed by the end edge |33 of fold ||6 and the bend between fiap ||9 and the front |06. The housing end |08 is formed by the end edge |22 of fold ||5 and the bend between the back |06 and fold |39.

The outer faces of the front |05 and the back |06 are provided with suitable indicia for correlation with the selected exposed indicia on' the faces of the slidable members |44, |45.`

The bends between and in connection with the folds of the web and the bends between and in connection with the folds of the web ||3 constitute latching means to prevent the indicia carrying members |0|, |92, |44, |45 when extended into said compartments from shifting relative to the housings in which they are ar` ranged. The indicia on the housings of the forms of the invention as shown by Figures 9, 10, 17 and 18 will lcorrespond to that as shown by Figures 1 and 2.

What I claim is:

l. In a calculating device, a housing formed with a pair of oppositely disposed parallel compartments each including an open outer end, a closed inner end and a front wall, said housing having an internal wall of less length than the housing providing an inner wall common to both compartments, said internal wall at its ends having oppositely extending folded portions connected to said front Walls to form the closed inner ends of said compartments and for securing said front and inner walls together, a pair of independent oppositely disposed members mounted in said compartments and each capable of sliding relative to its correlated compartment, each of said members having its front and rear faces provided with spaced parallel transversely disposed selectable rows of spaced indicia for selected exposure, the front walls of said cornpartments having their outer faces provided with indicia for correlation with the exposed indicia of said members, one of said front walls being formed with a window of a length for simultaneouslyl exposing a series oi selected rows of indicia on the front face of one of said members and a window of a length for exposing a single selected row of indicia from the rear face of the other of said members, the other of said front walls being formed with a Window for exposing a single selected row of indicia of the rear face ci the said one member and a window of a length for exposing a single selected row of indicia from the front face of the said other oi said members, and the indicia. on said front wall bordering said windows.

2; In a calculating device, a housing formed with a pair of oppositely disposed parallel compartments each including an open outer end, a closed inner end and a front wall, said housing havingV an internal wall of less length than the housing providing an inner wall common to both compartments, said internal Wall at its ends having oppositely extending folded portions connected to said front walls to form the closed inner ends of said compartments and for securing said front andv inner walls together, a pair of independent oppositely disposed, members mounted in said compartments and each capable of sliding relative to its correlated compartment, each of said members having its front and rear faces provided with spaced parallel transversely disposed selectable rows of spaced indicia for selected exposure, the front Walls of said compartments having their outer faces provided with indicia for correlation with the exposed indicia on said members, one oi said front walls being formed with a window of a length for simultaneously exposing a series of selected rows ol indicia on the iront face of one oi said members and a window of a length for exposing a single selectedirow` of indicia from the rear race of the other of said members, the other of said front Walls being formed with a window for exposing a i single selected row of indicia of the rear face oi the said one member and a window of a length for exposing a single selected row of indicia from the front face of the said other of said members, and the indicia on said front walls bordering said Windows, and said oppositely extended folded parts of said internal wall having portions thereof coacting with such wall for retaining said members stationary within the compartments at the inner ends of the latter.

3. In a calculating device, a housing formed with a pair of oppositely disposed parallel compartments each including an open outer end, a closed inner end and a front wall, said housing having an internal wall of less length than the housing providing an inner wall common to both compartments, said internal wall at its ends having oppositely extending folded portions connected to said front walls to form the closed inner ends of said compartments and for securing said frontand inner walls together, a pair Yof independent oppositely disposed members mounted in `said compartments and each capable of sliding relative to its correlated compartment, each of said'members having its front and rear faces provised` with spaced parallel transversely disposed selectable rows of spaced indicia for selected exposure, the front walls of said compartments having their outer faces provided with indicia for correlation with the exposed indicia of said members, each of said front walls formed Witha pair of windows, one for exposing indicia on the front face of one member and the other for exposing indiciaon the rear face of the other member, the exposing ol the indicia being simulacides@ taneous, said oppositely extending portions bcing inthe torni of one extending through oneof the windows oi a iront wall and secured to the outer face of the latter, the other iiap extending through one of the Windows of the other front Wall and secured to the outer lace of the latter, and said flaps having the inner portions thereof correlating with said internal wall for retaining said members stationary within said compartments.

4. In a calculating device, a housing formed with a pair of oppositely disposed parallel compartments each including an open outer end, a closed inner end and a front wall, said housing having an internal wall of less length than the housing providing an inner wall common to both compartments, said internal wall at its ends having oppositely extending folded portions connected to said front walls to form thc closed inner ends of said compartments and for securing said iront and inner walls together, a pair or independent oppositely disposed members mounted in said compartments and each capable of sliding relative to its correlated compartment, each o? said members having its front and rear races provided with spaced parallel transversely disposed selectable rows of spaced indicia foi' selected exposure, the front walls `of said compartments having their outer faces provided with indicia for correlation with the exposed indicia on said members, each of said iront walls formed with a pair of windows, one for exposing indicia on the front face ci one member and the other for exposing indicia on the reai face of the other member, the exposing of the indicia being simultaneously and said oppositcly extending Ioldablc portions of said internal wall having parts thereof coactiiig with suoli Wall i'or holding said menibers stationary within said compartments at the inner ends of the latter, said internal wall in proximity to its ends having spaced oppositely eutwardiy inclined edge parts terminating at their outer ends in the inner sides of the inner ends ci said por ions to provide clearances :for an inner corner oi said members when the latter are moved to retaining position.

5. in a calculating device, a housing formed with a pair of oppositely disposed parallel compartments each including an open outer end a closed inner end and a front Wall, said housing having an int al wall of less length than the housing provicng an inner wall common to both compartments, internal Wall at its ends having oppositely extending folded portions connested to said front Walls to form the closed inner ends of said compartments and for securing said iront and inner walls together, a pair of independent oppositely disposed members mounted in said compartments and each capable of sliding relative to its correlated compartment, each of said members having its iront and rear laces provided with spaced parallel transversely disposed selectable rows of spaced indicia for selected exposure, the iront walls oi said compartments having their outer races provided with indicia for correlation with the exposed indicia of said members, each of said front walls formed with a pair of windows, one for exposing indicia on the front face of one member and the other for exposing indicia on the rear iace of the other member, said oppositely extending portions being in the form of flaps, one extending through one of the windows ci a iront wall and secured to the outer face of the latter, the other flap extending through one of the windows of the other iront Wall and secured to the outer face of the latter, and said lflaps having the inner portions thereof correlating With said internal wall for holding said members stationary within said compartments, said internal Wall in proximity to its ends having spaced oppositely outwardly inclined edge parts terminating at their outer ends in the inner sides of the inner ends of said portions to provide clearances for an inner corner of said meinbers when the latter are moved to retaining position.

6. In a calculating device, a housing formed with a pair of oppositely disposed parallel compartments, each including a closed inner end, an open outer end and a front Wall, said housing having an internal wall of less length than the housing providing an inner wall common to both compartments, each of said front walls being formed with a pair of windows', said internal wall being formed at its ends with a pair of oppositely disposed folded portions of less width than such Wall, each of said portions having a part extending through one of the windows of a front wall and secured to the outer face of the latter, a pair of independently operated oppositely disposed members mounted in said compartments and each capable of sliding relative to its associated compartment, each of said members having its front face and its rear face provided with indicia for selected exposure, one of the windows of a iront wall for exposing selected indicia from the front face of one member and the other window of such wall for exposing selected indicia from the rear face of the other of said members, the front walls of said compartments and the parts of the said portions secured to such Walls having their exposed faces provided with indicia bordering said Windows for correlation with the selected exposed indicia on the faces of such members.

7. In a calculating device, a housing formed with a pair of oppositely disposed parallel compartments, each including a closed inner end, an open outer end and a front wall, said housing having an internal Wall of less length than the housing providing an inner Wall common to both compartments, each of said iront Walls being formed with a pair of windows, said internal Wall being formed at its ends with a pair of oppositely disposed folded portions of less width than such wall, each of said portions having a part extending through one of the windows of a front wall and secured to the outer face of the latter, a pair of independently operated oppositely disposed members mounted in said compartments and each capable of sliding relative to its associated compartment, each of said members having its front face and its rear face provided with indicia for selected exposure, one of the windows of a front Wall for exposing selected indicia from the front face of one member and the other window of such Wall for exposing selected indicia from the rear face of the other of said members, the iront walls of said compartments and the parts of the said portions secured to such walis having their exposed faces provided with indicia bordering said Windows for correlation with the selected exposed indicia on the faces of such members, and said oppositely extending portions of said internal wall having oppositely extending other parts coacting with the said internal wall for retaining said members stationary within said compartments at the inner ends thereof, the said oppositely extending other parts being disposed at opposite inclinations.

8. In a calculating device a housing formed of an inner and an outer section, one of said sections including parts correlating with parts of the other one of said sections to provide said housing with a pair of oppositely extending closed inner end and open outer end compartments, one having an entrance at one end of thefhousing and the other having an entrance at the other end of the compartments, said compartments having their closed ends spaced inwardly of the ends of said housing, a pair of independently shiftable members each slidably mounted in one of said compartments and provided with indicia on each of its faces for selective exposure, and said sections provided With means for exposing selected indicia from the faces of a member from opposite sides of the housing.

9. In a calculating device comprising a housing formed therein with a pair of oppositely disposed parallel compartments for independently slidable card like carriers having indicia on each of their faces, said compartments having closed inner ends and open outer ends, said compartments being of less length than said housing and having their closed ends spaced inwardly from the ends of the housing, one of said compartments having its open end at one end of the housing, the other of said compartments having its open end at the other end of the housing, and said housing provided with means for exposing selected indicia from both faces of each carrier simultaneously from opposite sides of the housing.

10. In a calculating device comprising a housing having at opposite ends of its front and rear faces windows and formed therein with a pair of oppositely disposed parallel compartments for independently slidable card-like carriers having indicia on each of their faces, said compartments having closed inner ends and open outer ends, said compartments being of less length than said housing and having their closed ends spaced inwardly from the ends of the housing, and short of the windows in opposite ends and opposite face of the housing, one of said compartments having its open end at one end of the housing, the other of said compartments having its open end at the other .end of the housing, said housing provided with means for exposing selected indicia from both faces of each carrier simultaneously from opposite sides of the housing, and said housing having means therein for normally retaining the carriers from sliding relative to the carriers.

l1. In a calculating device, a housing provided therein with means to form a pair of oppositely disposed parallel spaced closed inner and open outer end independent compartments one having its open end at one end of the housing and the other having its open end at the other end of the housing, said compartments having their closed ends spaced inwardly from the ends, a pair of independently shiftable members each slidably mounted in one of said compartments and provided With indicia on each of its faces for selective exposure, said housing including a front and a back, said front being formed with means for exposing selected indicia from one face of each of said members and with indicia bordering said means for correlation with the said exposed indicia, and said front being formed with means for exposing selected indicia fro-m the other face of each of said members and with indicia bordering said means of said front for correlation with said second mentioned exposed indicia, said indicia from each member visible without regard to the position or movement of the other member.

12. In a calculating device, a housing formed of an inner and outer section, said outer section being formed with spaced openings to provide said housing with windows, said outer section being provided with a pair of inwardly folded flaps disposed in offset relation and a pair of inwardly folded flaps disposed in offset relation formed with apertures aligned with certain of said Win- Windows, and a pair of independently shiftable members each sldahly mounted in one of said compartments and each provided with indicia on each of its faces for selective exposure simultaneously through certain of said windows.

13. In a data viewing device, a housing and a pair oi shiftahle elements adapted to be carried within said housing, said housing being formed with two separated compartments therein open at opposite ends from each other and each adapt ed to house one of said shiftable elements, said compartments being each formed with Window openings for viewing selective data on said shiftable elements, and said Window openings being so arranged that either shiftable element may be viewed on both sides without regard to the specie position of the other element.

RALPH P, ROSS 

